[compiler-rt] [compiler-rt] Add SPIR-V target support for UBSan Minimal Runtime (PR #195979)

[Vitaly Buka via llvm-commits]

https://github.com/vitalybuka requested changes to this pull request.

I suggest keep this PR open and extract small refactorings into own PRs

if they are just opportunistic unrelated improvements, state it's there or consider abandoning.

if they are realy needed for SPIR-V PR, please still consider extracting into own PRs, just refer this one in description and why it's needed

https://github.com/llvm/llvm-project/pull/195979